A new battle: Veterans more likely to have heart disease. After the war is over, veterans face a new threat. They are more likely to have heart disease at a younger age than nonveterans, and this could herald a new health crisis on the horizon. Source 2r.
With all the constant environmental changes this is expected unfortunately. There are so many times when you have to change diets, exercise and not to mention possible wounds that might have a permanent effect on your body even if it's patched up.